The previous article introduced to you "How to use PHP to solve high concurrency problems? (Source code attached) 》, this article continues to introduce to you how to use PHP to implement a simple registration and login system, let’s study together! ! !
The directory structure is as follows, where the function folder contains two function files, and the uploads folder is used to store uploaded files.
Note: The blogger is using php5. If friends who use php7 run and report errors, part of the reason is caused by the new syntax. Just modify it to the new syntax.
Login page
index.html
Registration page
register. html
用户注册登录系统
Realize login function
login_process.php
0) { echo "登录成功"; } else { echo "登录失败"; } closeConnect(); ?>
Realize registration Function
register.php
"); } // 判断输入密码与确认密码是否相同 $password = $_POST['password']; $confirmPassword = $_POST['confirmPassword']; if ($password != $confirmPassword) { exit("输入的密码与确认密码不相等!"); } $userName = $_POST['userName']; $domain = $_POST['domain']; $userName = $userName . $domain; // 判断用户名是否重复 $userNameSQL = "select * from users where userName = '$userName'"; getConnect(); $resultSet = mysql_query($userNameSQL); if (mysql_num_rows($resultSet) > 0) { exit("用户名已被占用,请更换其他用户名"); } $sex = $_POST['sex']; if (empty($_POST['interests'])) { $interests = ""; } else { $interests = implode(";", $_POST['interests']); } $remark = $_POST['remark']; $myPictureName = $_FILES['myPicture']['name']; $registerSQL = "insert into users values(null, '$userName', '$password', '$sex', '$interests', '$myPictureName', '$remark')"; $message = upload($_FILES['myPicture'], "uploads"); if ($message == "上传成功" || $message == "没有上传") { mysql_query($registerSQL); $userID = mysql_insert_id(); echo "注册成功
"; } else { exit($message); } $userSQL = "select * from users where user_id = '$userID'"; $userResult = mysql_query($userSQL); if ($user = mysql_fetch_array($userResult)) { echo "您的注册用户名为:" . $user['userName']; } else { exit("用户注册失败!"); } closeConnect();
Function to realize database connection and closing
database.php
Function to implement file upload
fileSystem.php
Recommended learning: "PHP Video tutorial》
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